1 onion, chopped fine
1/2 stick butter, softened
1 tbsp. poppy seeds
6 sandwich buns
Ham and Swiss cheese for 6 sandwich buns

Combine onion, poppy seeds into softened butter. Spread this onto the sandwich buns, along with the ham and cheese. Wrap in foil. Put into 350 degree oven until cheese is melted. Serve. Can be made ahead and frozen and then heated and served.